[x265] [ANN] x265 1.8 released
Deepthi Nandakumar
deepthi at multicorewareinc.com
Thu Oct 8 12:56:56 CEST 2015
x265 version 1.8 has been released. This release supports 12bit input
depths, a large amount of AVX2 optimizations, entropy coding optimizations,
as well as new quality features.
Full documentation is available at http://x265.readthedocs.org/en/stable/
<http://x265.readthedocs.org/en/1.7/>
=================================== API Changes
========================================================
- Experimental support for Main12 is now enabled. Partial assembly
support exists.
- Main12 and Intra/Still picture profiles are now supported. Still
picture profile is detected based on x265_param::totalFrames.
- Three classes of encoding statistics are now available through the
API.
- x265_stats - contains encoding statistics, available through
x265_encoder_get_stats()
- x265_frame_stats and x265_cu_stats - contains frame encoding
statistics, available through recon x265_picture
- --csv
- x265_encoder_log() is now deprecated
- x265_param::csvfn is also deprecated
- --log-level now controls only console logging, frame level console
logging has been removed.
- Support added for new color transfer characteristic ARIB STD-B67
================================== New Features
========================================================
- limit-refs
- This feature limits the references analysed for individual CUS.
- Provides a nice tradeoff between efficiency and performance.
- aq-mode 3
- A new aq-mode that provides additional biasing for low-light
conditions.
- An improved scene cut detection logic that allows ratecontrol to
manage visual quality at fade-ins and fade-outs better.
================================ Preset and Tune Options
===================================================
- tune grain
- Increases psyRdoq strength to 10.0, and rdoq-level to 2.
- qg-size
- Default value changed to 32.
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